43481320 has 32 divisors (see below), whose sum is σ = 100222920. Its totient is φ = 16967680.

The previous prime is 43481309. The next prime is 43481351. The reversal of 43481320 is 2318434.

It can be written as a sum of positive squares in 4 ways, for example, as 15792676 + 27688644 = 3974^2 + 5262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11617 + ... + 14896.

Almost surely, 2^43481320 is an apocalyptic number.

43481320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43481320 is an abundant number, since it is smaller than the sum of its proper divisors (56741600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43481320 is a wasteful number, since it uses less digits than its factorization.

43481320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26565 (or 26561 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 43481320 is about 6594.0366999282. The cubic root of 43481320 is about 351.6421337103.

Adding to 43481320 its reverse (2318434), we get a palindrome (45799754).

The spelling of 43481320 in words is "forty-three million, four hundred eighty-one thousand, three hundred twenty".